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THE IBM 2008 GALE ARABIC SPEECH TRANSCRIPTION SYSTEM

By George Saon, Hagen Soltau, Upendra Chaudhari, Stephen Chu, Brian Kingsbury, Hong-kwang Kuo, Lidia Mangu and Daniel Povey

Abstract

This paper describes the Arabic broadcast transcription system fielded by IBM in the GALE Phase 3.5 machine translation evaluation. Key advances compared to our Phase 2.5 system include improved discriminative training, the use of Subspace Gaussian Mixture Models (SGMM), neural network acoustic features, variable frame rate decoding, training data partitioning experiments, unpruned n-gram language models and neural network language models. These advances were instrumental in achieving a word error rate of 8.9 % on the evaluation test set. Index Terms — Speech recognition 1

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.187.4941
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